Which Roman emperor shares his name with a 2016 single by the English rock band Blossoms?

Charlemagne or Charles the Great (2 April 748 – 28 January 814) was King of the Franks from 768, King of the Lombards from 774, and Emperor of the Romans from 800. During the Early Middle Ages, Charlemagne united the majority of western and central Europe. He was the first recognized emperor to rule from western Europe since the fall of the Western Roman Empire around three centuries earlier.

Blossoms are an English indie pop band from Stockport, Greater Manchester, England. They have released three studio albums, four extended plays and fifteen singles. Their debut studio album, Blossoms, was released in August 2016 and peaked at number one on the UK Albums Chart. The album includes the singles "Blow", "Cut Me and I'll Bleed", "Blown Rose", "Charlemagne", "At Most a Kiss", "Getaway", "My Favourite Room" and "Honey Sweet".

The song "Charlemagne" was released as a digital download in the United Kingdom on 5 October 2015 through Virgin EMI Records as the fourth single from their debut self-titled studio album. It was written by the band, and produced by James Skelly and Rich Turvey. The song has peaked at number 98 on the UK Singles Chart and number 38 on the Scottish Singles Chart.